Wall-mounted air conditioner indoor unit

Abstract

The application relates to the air conditioning technical field, and discloses a wall-mounted air conditioner indoor unit, which comprises a shell and a fresh air module. The fresh air module comprises a fresh air volute, a fresh air impeller, an exhaust air volute, an exhaust air impeller, a driving motor, a heat exchange core shell, a heat exchange core, an exhaust air pipe and a drain pipe. One end of the exhaust air pipe is communicated with an exhaust air heat exchange air outlet, and the other end is used for being communicated with an outdoor space. The drain pipe comprises a main body section and a connecting section. The water inlet end of the main body section is communicated with a drain port of the shell. The connecting section has a first end and a second end. The first end is communicated with a water outlet of the main body section, and the second end is communicated with the exhaust air pipe. Along the exhaust air direction of the exhaust air pipe, the second end is farther away from the main body section than the first end. In the application, the pipeline communicated from the indoor space to the outdoor space can be reduced, so that the fresh air pipe can have a thicker pipe diameter, the fresh air inlet air volume is improved, and / or the exhaust air pipe has a thicker pipe diameter, and the exhaust air volume of the turbid air is improved.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a wall-mounted air conditioning indoor unit. Background Technology

[0002] The field of home appliance technology encompasses a wide range of product categories, including but not limited to refrigerators, washing machines, air conditioners, microwave ovens, dishwashers, and vacuum cleaners. The technological development trends for these products primarily focus on intelligentization, energy conservation and environmental protection, optimized user experience, and the application of new materials. Optimized user experience is achieved through design innovation and functional enhancement to meet consumers' demands for health, convenience, and personalization.

[0003] As an important branch of home appliances, wall-mounted air conditioner indoor units use a fresh air module to draw in fresh outdoor air through a fresh air impeller and exhaust stale indoor air to the outside through an exhaust impeller, thus completing the replacement of indoor air with fresh air. Moreover, through a heat exchange core, heat can be exchanged between the fresh air entering the room and the indoor air being exhausted, so that the temperature of the fresh air entering the room is closer to the indoor temperature. This eliminates the need to start the compressor to heat or cool the fresh air separately, and also avoids the fresh air significantly affecting the indoor temperature.

[0004] However, the drain pipe of the indoor unit of a wall-mounted air conditioner connects to the outside through the drain outlet on the casing. The fresh air module also needs two pipes extending from the indoor unit to the outside: a fresh air duct for introducing fresh air and an exhaust duct for expelling stale air. These two pipes, along with the drain pipe, need to pass through pre-drilled holes in the wall to connect to the outdoor space. However, the diameter of these pre-drilled holes in the wall is limited, resulting in a smaller diameter for the fresh air duct, affecting the fresh air volume, and / or a smaller diameter for the exhaust duct, affecting the exhaust air volume. Utility Model Content

[0005] This application discloses a wall-mounted air conditioner indoor unit that allows condensate from the drain pipe to be discharged to the outdoor space through the exhaust pipe, reducing the number of pipes connecting the indoor space to the outdoor space. This allows the fresh air duct to have a larger diameter, increasing the intake air volume of fresh air, and / or the exhaust duct to have a larger diameter, increasing the exhaust air volume of stale air.

[0006] To achieve the above objectives, this application discloses a wall-mounted air conditioner indoor unit, comprising: a housing having a drain outlet;

[0007] A fresh air module is disposed within the housing, and the fresh air module includes:

[0008] Fresh air volute;

[0009] A fresh air impeller is disposed inside the fresh air volute, and the fresh air impeller is used to draw in fresh air from the outdoor space;

[0010] An exhaust volute is arranged side-by-side with the fresh air volute along the axial direction of the fresh air volute.

[0011] An exhaust impeller is disposed inside the exhaust volute, and the shaft of the exhaust impeller and the shaft of the fresh air impeller both extend along the axial direction of the fresh air volute. The exhaust impeller is used to exhaust stale air from the indoor space.

[0012] A drive motor is connected to the fresh air impeller and the exhaust impeller respectively, so as to drive the fresh air impeller and the exhaust impeller to rotate;

[0013] A heat exchange core housing is disposed in the fresh air volute. The heat exchange core housing has a heat exchange chamber and an exhaust heat exchange outlet. The heat exchange chamber is connected to the air outlet of the fresh air volute, the air outlet of the exhaust volute, and the exhaust heat exchange outlet, respectively.

[0014] A heat exchange core is disposed inside the heat exchange cavity to exchange heat between indoor stale air and outdoor fresh air flowing through the heat exchange cavity;

[0015] An exhaust duct, one end of which is connected to the exhaust heat exchange outlet, and the other end of which is connected to the outdoor space;

[0016] Drain pipe, the drain pipe comprising:

[0017] The main body section, wherein the water inlet end of the main body section is connected to the drain outlet of the casing;

[0018] The connecting section has a first end and a second end. The first end is connected to the outlet of the main body section, and the second end is connected to the exhaust pipe. The connection position of the second end and the exhaust pipe is located in the indoor space. Along the exhaust direction of the exhaust pipe, the second end is farther away from the main body section than the first end.

[0019] In this way, the two ends of the exhaust duct are connected to the exhaust heat exchange outlet and the outdoor space, respectively, which can discharge the stale air in the indoor space to the outdoor space. The drain pipe is connected to the exhaust duct through the connecting section, so that the liquid discharged from the drain outlet of the unit casing can enter the exhaust duct and be discharged to the outdoor space together with the stale air in the exhaust duct. This eliminates the need for the drain pipe to pass through the wall and the pre-reserved hole in the wall along with the fresh air duct and the exhaust duct. Without changing the diameter of the pre-reserved hole, more space is left for the fresh air duct and / or the exhaust duct. This allows for a larger diameter of the fresh air duct, which helps to increase the fresh air volume, and / or a larger diameter of the exhaust duct, which helps to increase the exhaust air volume. Furthermore, the drain pipe in this embodiment includes a main body section and a connecting section. The inlet of the main body section is connected to the drain outlet of the casing. The drain outlet can be located on the base of the casing, allowing liquid on the condenser inside the casing to flow onto the base and then enter the main body section of the drain pipe through the drain outlet. The main body section can extend horizontally along the length of the casing, while the connecting section can be an inclined pipe. Along the exhaust direction of the exhaust pipe, the second end of the connecting section is farther from the main body section than the first end, so that the flow direction of the water in the connecting section forms an acute angle with the flow direction of the turbid airflow in the exhaust pipe. Here, the acute angle is... Figure 8 At point α, the water flow within the connecting section and the airflow within the exhaust duct are aligned so that both flow in the same direction towards the outdoor space, preventing backflow. This allows the water to flow smoothly from the exhaust duct to the outdoor space without reversing its flow and entering the heat exchange chamber. This avoids liquid contamination of the heat exchange core, reducing its lifespan and impacting the heat exchange of the fresh air module. Furthermore, the turbid airflow within the exhaust duct also drives the water flow, further facilitating its smooth discharge to the outdoor space. It also reduces collisions and impacts between the water flow and the exhaust duct, thus lowering noise generated by water flow impact. In addition, the smooth airflow reduces airflow noise during exhaust, improving the user experience.

[0020] As an optional implementation, the angle between the axis of the connecting section and the axis of the exhaust pipe is greater than or equal to 15° and less than 90°.

[0021] Thus, on the one hand, the angle between the axis of the connecting section and the axis of the exhaust pipe is less than 90°, which allows the airflow and water flow to flow more smoothly to the outdoor space along the exhaust pipe when they converge. On the other hand, the angle between the axis of the connecting section and the axis of the exhaust pipe is greater than or equal to 15°, which can avoid stress concentration at the connection between the drain pipe and the exhaust pipe, reduce structural stability, and affect the service life of the exhaust pipe and the drain pipe.

[0022] As an optional implementation, the wall-mounted air conditioner indoor unit includes:

[0023] A tee connector, the tee connector comprising:

[0024] The manifold has its axis collinear with the axis of the exhaust duct. The manifold has a third end and a fourth end that are interconnected. The third end is connected to the exhaust heat exchange outlet, and the fourth end is connected to the outdoor space through the exhaust duct.

[0025] The inlet pipe has its inlet end connected to the connecting section and its outlet end connected to the manifold. The axis of the inlet pipe is collinear with the axis of the connecting section.

[0026] Thus, the T-joint design simplifies the connection process between the drain pipe and the exhaust pipe, reducing installation difficulty and improving efficiency. The T-joint includes a manifold and an inlet pipe. The axis of the manifold is collinear with the axis of the exhaust pipe, and the axis of the inlet pipe is collinear with the axis of the drain pipe. This creates an acute angle between the manifold and inlet pipes, allowing for smoother water flow and preventing backflow into the heat exchange chamber. This avoids liquid contamination of the heat exchange core, reducing its lifespan and impacting the heat exchange of the fresh air module. It also reduces collisions and impacts between the water flow and the exhaust pipe, thus lowering noise generated by water flow. Furthermore, the smooth airflow reduces exhaust noise, enhancing the user experience.

[0027] As an optional implementation, the tee connector is disposed between the exhaust pipe and the drain pipe, the third end and the fourth end of the manifold are both connected to the exhaust pipe, the third end is connected to the exhaust heat exchange outlet through the exhaust pipe, the fourth end is connected to the outdoor space through the exhaust pipe, and the water inlet end of the water inlet pipe is connected to the connecting section of the drain pipe.

[0028] In this way, the tee connector can be installed outside the casing, between the casing and the wall. The water inlet pipe of the tee connector connects to the drain pipe, and the manifold of the tee connector is located on the exhaust pipe. Both ends of the manifold connect to the exhaust pipes on both sides, and the tee connector is connected and fixed through the exhaust pipe and the drain pipe. This arrangement makes it easier for operators to connect the pipes and facilitates the disassembly and assembly of each pipe during after-sales maintenance.

[0029] As an optional implementation, the three-way connector is disposed between the heat exchange core shell, the exhaust pipe and the drain pipe, the third end of the manifold is connected to the heat exchange core shell and communicates with the exhaust heat exchange outlet, the fourth end of the manifold is connected to and communicates with the exhaust pipe, and the water inlet end of the water inlet pipe is connected to and communicates with the connecting section of the drain pipe.

[0030] In this way, the T-connector can also be set inside the housing or through the housing. The water inlet pipe of the T-connector is connected to the drain pipe, and the manifold of the T-connector is connected to the heat exchange core outer shell and the exhaust pipe respectively. This solution directly sets the T-connector on the heat exchange core outer shell, which can make the installation and fixation of the T-connector more stable and avoid shaking.

[0031] In one embodiment, the tee connector includes:

[0032] The connecting pipe has a fifth end and a sixth end that are interconnected. The fifth end is connected to the outer shell of the heat exchange core and is connected to the exhaust heat exchange outlet. The sixth end is connected to and communicates with the third end of the manifold. The connecting pipe and the manifold are integrally formed.

[0033] In this way, the tee can be installed on the heat exchange core shell through the connecting pipe, and the manifold can be connected to the exhaust heat exchange outlet. The axis of the connecting pipe intersects with the axis of the manifold, and can be perpendicular to each other. The connecting pipe and the manifold are integrally formed, which can simplify the production process of the tee, improve production efficiency, and improve the sealing performance of the tee, thus preventing air leakage at the connection between the connecting pipe and the manifold.

[0034] As an optional implementation, the connecting pipe has:

[0035] A protrusion is provided on the outer periphery of the connecting pipe and located at the fifth end of the connecting pipe;

[0036] A mounting hole is provided in the protrusion and extends through the protrusion along the axial direction of the connecting pipe;

[0037] The heat exchange core housing has:

[0038] A threaded hole is used for screwing fasteners, and the threaded hole corresponds to and is adapted to the mounting hole;

[0039] The connecting pipe is installed on the heat exchange core housing through the fasteners, which engage with the mounting holes and the threaded holes.

[0040] This not only allows the tee connector to be disassembled and installed for easy maintenance, but also provides it with a stable fixing structure to prevent it from falling off during use.

[0041] As an optional implementation, the heat exchange core housing has:

[0042] An air supply duct is installed at the exhaust heat exchange outlet;

[0043] The connecting pipe has:

[0044] A connecting groove is provided on the inner wall of the connecting pipe, the connecting groove extends from the fifth end to the sixth end, and the air supply pipe is inserted into the connecting groove.

[0045] In this way, the air supply duct can extend into the connecting pipe and mate with the connecting groove. The air supply duct can send the stale airflow discharged from the exhaust heat exchanger outlet into the connecting pipe, changing the outlet position of the stale airflow on the heat exchanger core shell. The outlet position is moved inside the connecting pipe, rather than at the connection surface between the connecting pipe and the heat exchanger core shell. This design improves the sealing between the connecting pipe and the heat exchanger core shell, preventing stale air leakage and re-entry into the room, which would affect the exhaust performance of the fresh air module. Furthermore, the insertion and mating of the connecting groove and the air supply duct provides stable support and positioning for the connecting pipe, making it less prone to shaking or displacement. This enhances the stability of the entire structure, extends the service life of components, and reduces the risk of failure due to loose connections.

[0046] As an optional implementation, the tee connector includes:

[0047] A water-blocking rib is arranged around the inner wall of the connecting pipe. The water-blocking rib is located at the sixth end of the connecting pipe and is integrally formed with the connecting pipe and the manifold. The water-blocking rib is used to prevent the water discharged from the drain pipe from entering the exhaust heat exchange outlet.

[0048] In this way, the water flow along the inner wall of the connecting pipe can be blocked, preventing water from flowing backward into the exhaust heat exchange outlet and affecting the service life of the heat exchange core inside the heat exchange core shell, thus improving the reliability and operational stability of the fresh air module. Furthermore, the water-blocking rib is integrally formed with the connecting pipe and the manifold, allowing the water-blocking rib to be directly formed at the intersection of the connecting pipe and the manifold during the tee joint molding process, eliminating the need for additional production steps and ensuring the production efficiency of the tee joint.

[0049] As an optional implementation, the heat exchange core housing is disposed at the air outlet of the fresh air volute, and the heat exchange core housing has:

[0050] The fresh air heat exchange inlet is connected to the air outlet of the fresh air volute.

[0051] Fresh air heat exchange outlet, used to connect indoor space;

[0052] The exhaust heat exchange inlet is connected to the exhaust volute outlet;

[0053] The heat exchange core contains:

[0054] The fresh air flow channel is connected to the fresh air heat exchange inlet and the fresh air heat exchange outlet respectively;

[0055] The turbid air flow channel is connected to the exhaust heat exchange inlet and the exhaust heat exchange outlet, respectively;

[0056] The fresh air and the stale air can exchange heat through the fresh air flow channel and the stale air flow channel.

[0057] In this way, the heat exchange core is placed in the heat exchange chamber of the heat exchange core shell. The fresh air flow channel and the stale air flow channel are arranged adjacent to each other or staggered inside the heat exchange core to achieve heat transfer. However, the fresh air flow channel and the stale air flow channel are independent of each other, which can ensure that the fresh air and stale air do not mix. The fresh air and stale air exchange heat fully in the heat exchange core, improving the energy efficiency of the air conditioning system, reducing energy consumption, reducing heat loss between indoor and outdoor air, and improving indoor air comfort.

[0058] Compared with the prior art, the beneficial effects of this application are:

[0059] The wall-mounted air conditioner indoor unit provided in this application embodiment connects the drain pipe and the exhaust pipe together, allowing the liquid discharged from the drain outlet of the unit casing to enter the exhaust pipe and be discharged to the outdoor space along with the stale air in the exhaust pipe. This eliminates the need for the drain pipe to pass through the wall, leaving more space for the fresh air duct and / or exhaust duct. This allows for a larger diameter of the fresh air duct, which helps increase the fresh air volume, and / or a larger diameter of the exhaust duct, which helps increase the exhaust air volume. Furthermore, the second end of the connecting section is farther away from the main body section than the first end along the exhaust direction of the exhaust duct. This ensures that when the water flow in the connecting section and the airflow in the exhaust duct converge, they flow in the same direction, preventing backflow. This allows the water to flow smoothly from the exhaust duct to the outdoor space without entering the heat exchange chamber in the opposite direction, thus avoiding liquid contamination of the heat exchange core and affecting the heat exchange of the fresh air module. Attached Figure Description

[0060] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0061] Figure 1 This is a front view structural diagram of the wall-mounted air conditioner indoor unit disclosed in the embodiments of this application;

[0062] Figure 2 This is a rear view structural diagram of the wall-mounted air conditioner indoor unit without a T-joint disclosed in the embodiments of this application;

[0063] Figure 3 This is a rear view of the wall-mounted air conditioner indoor unit with a three-way connector disposed between the heat exchange core housing, exhaust pipe, and drain pipe, as disclosed in the embodiments of this application.

[0064] Figure 4 This is a rear view of the indoor unit of a wall-mounted air conditioner with a three-way connector disposed between the exhaust pipe and the drain pipe, as disclosed in an embodiment of this application.

[0065] Figure 5 This is a schematic diagram of the structure of the fresh air module without a T-junction disclosed in the embodiments of this application;

[0066] Figure 6 This is a schematic diagram of the structure of the fresh air module disclosed in this application, in which the three-way connector is disposed between the heat exchange core shell, the exhaust pipe and the drain pipe;

[0067] Figure 7 This is a schematic diagram of the fresh air module with a three-way connector disposed between the exhaust pipe and the drain pipe, as disclosed in an embodiment of this application.

[0068] Figure 8 This is a schematic cross-sectional view of the fresh air module without a T-junction disclosed in an embodiment of this application;

[0069] Figure 9 This is a schematic diagram of the structure of the tee connector disclosed in this application, which is disposed between the heat exchange core housing, the exhaust pipe, and the drain pipe.

[0070] Figure 10 This is a schematic cross-sectional view of the fresh air module with a three-way connector disposed between the heat exchange core housing, the exhaust pipe, and the drain pipe, as disclosed in an embodiment of this application.

[0071] Figure 11 The embodiments disclosed in this application Figure 10 Enlarged structural diagram at point A;

[0072] Figure 12 This is a cross-sectional structural diagram of a fresh air module with a three-way connector disposed between the heat exchange core housing, the exhaust pipe, and the drain pipe, as disclosed in another embodiment of this application.

[0073] Figure 13 This is a schematic diagram of the structure of the tee joint, the exhaust pipe, and the drain pipe disclosed in the embodiments of this application, which is disposed between the exhaust pipe and the drain pipe.

[0074] Figure 14 This is a schematic diagram of the fresh air flow direction of the fresh air module disclosed in the embodiments of this application;

[0075] Figure 15 This is a schematic diagram of the turbid airflow direction of the fresh air module disclosed in the embodiments of this application;

[0076] Figure 16 This is an exploded view of the fresh air module disclosed in an embodiment of this application.

[0077] Explanation of reference numerals in the attached figures:

[0078] 100 - Casing; 11 - Drain outlet; 12 - Drain pipe; 121 - Main body section; 122 - Connecting section; 1221 - First end; 1222 - Second end; 13 - T-connector; 131 - Manifold; 1311 - Third end; 1312 - Fourth end; 132 - Water inlet pipe; 133 - Connecting pipe; 1331 - Fifth end; 1332 - Sixth end; 1333 - Protrusion; 1334 - Mounting hole; 1335 - Connecting groove; 134 - Water baffle; 200 - Fresh air module; 21 - Fresh air volute; 22 - New 23-Exhaust volute; 24-Exhaust impeller; 25-Drive motor; 26-Heat exchange core housing; 2601-Heat exchange chamber; 261-Fresh air heat exchange inlet; 262-Fresh air heat exchange outlet; 263-Exhaust air heat exchange inlet; 264-Exhaust air heat exchange outlet; 265-Threaded hole; 266-Air supply duct; 27-Heat exchange core; 28-Exhaust duct; 29-Fresh air duct; 30-Filter core housing; 301-Filter chamber; 31-Fresh air filter inlet; 32-Fresh air filter exhaust outlet; 33-Filter core. Detailed Implementation

[0079] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0080] In this application, the terms "upper," "lower," "top," "bottom," "inner," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0081] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain circumstances to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0082] Furthermore, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0083] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0084] The field of home appliance technology encompasses a wide range of product categories, including but not limited to refrigerators, washing machines, air conditioners, microwave ovens, dishwashers, and vacuum cleaners. The technological development trends for these products primarily focus on intelligentization, energy conservation and environmental protection, optimized user experience, and the application of new materials. Optimized user experience is achieved through design innovation and functional enhancement to meet consumers' demands for health, convenience, and personalization.

[0085] As an important branch of home appliances, wall-mounted air conditioner indoor units use a fresh air module to introduce fresh outdoor air into the room through a fresh air impeller and exhaust stale indoor air to the outside through an exhaust impeller, thus completing the replacement of indoor air with fresh air. Moreover, through a heat exchange core, heat can be exchanged between the fresh air entering the room and the indoor air about to be exhausted, so that the temperature of the fresh air entering the room is closer to the indoor temperature. There is no need to start the compressor to heat or cool the fresh air separately, and the fresh air can also avoid significantly affecting the indoor temperature.

[0086] However, the drain pipe of the indoor unit of a wall-mounted air conditioner connects to the outside through the drain outlet on the casing. The fresh air module also needs two pipes extending from the indoor unit to the outside: a fresh air duct for introducing fresh air and an exhaust duct for expelling stale air. These two pipes, along with the drain pipe, need to pass through pre-drilled holes in the wall to connect to the outdoor space. However, the diameter of these pre-drilled holes in the wall is limited, resulting in a smaller diameter for the fresh air duct, affecting the fresh air volume, and / or a smaller diameter for the exhaust duct, affecting the exhaust air volume.

[0087] Based on this, this application provides a wall-mounted air conditioner indoor unit that can reduce the number of pipes connecting the indoor space to the outdoor space, thereby allowing the fresh air duct to have a larger diameter, increasing the intake air volume of fresh air, and / or allowing the exhaust duct to have a larger diameter, increasing the exhaust air volume of stale air.

[0088] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0089] Please see Figure 1 , Figure 2 and Figure 16 . Figure 1 This is a front view structural diagram of the wall-mounted air conditioner indoor unit disclosed in an embodiment of this application. Figure 2 This is a rear view structural diagram of the wall-mounted air conditioner indoor unit without the T-joint 13 disclosed in the embodiments of this application. Figure 16 This is an exploded view of the fresh air module 200 disclosed in an embodiment of this application. This application discloses a wall-mounted air conditioner indoor unit, including a housing 100 and a fresh air module 200. The housing 100 has a drain outlet 11. The fresh air module 200 is disposed within the housing 100 and includes a fresh air volute 21, a fresh air impeller 22, an exhaust volute 23, an exhaust impeller 24, a drive motor 25, a heat exchange core housing 26, a heat exchange core 27, an exhaust pipe 28, and a drain pipe 12. The fresh air impeller 22 is disposed within the fresh air volute 21 and is used to draw in fresh air. Fresh air enters the outdoor space; exhaust volute 23 is arranged parallel to fresh air volute 21 along its axial direction; exhaust impeller 24 is disposed inside exhaust volute 23, and the shaft of exhaust impeller 24 and the shaft of fresh air impeller 22 both extend along the axial direction of fresh air volute 21, exhaust impeller 24 is used to exhaust stale air from the indoor space; drive motor 25 is connected to fresh air impeller 22 and exhaust impeller 24 respectively to drive fresh air impeller 22 and exhaust impeller 24 to rotate; heat exchange core housing 26 is disposed in fresh air volute 23. The shell 21 and the heat exchange core outer shell 26 have a heat exchange cavity 2601 and an exhaust heat exchange outlet 264. The heat exchange cavity 2601 is connected to the outlet of the fresh air volute 21, the outlet of the exhaust volute 23, and the exhaust heat exchange outlet 264, respectively. The heat exchange core 27 is disposed in the heat exchange cavity 2601 to exchange heat between the indoor stale air and the outdoor fresh air flowing through the heat exchange cavity 2601. One end of the exhaust pipe 28 is connected to the exhaust heat exchange outlet 264, and the other end is used to connect to the outdoor space. Drain pipe 12 It includes a main body section 121 and a connecting section 122. The water inlet end of the main body section 121 is connected to the drain outlet 11 of the casing 100. The connecting section 122 has a first end 1221 and a second end 1222. The first end 1221 is connected to the water outlet of the main body section 121, and the second end 1222 is connected to the exhaust pipe 28. The connection position of the second end 1222 and the exhaust pipe 28 is located in the indoor space. Along the exhaust air direction of the exhaust pipe 28, the second end 1222 is farther away from the main body section 121 than the first end 1221.

[0090] Specifically, the wall-mounted air conditioner indoor unit includes an indoor unit body, which is usually installed on the indoor side and suspended on the wall. The indoor unit body may include components such as a fan and a heat exchanger. In conjunction with the outdoor unit of the air conditioner, it can improve the indoor air environment, including cooling, heating, and humidity regulation.

[0091] Combination Figure 16 In some embodiments, the fresh air module 200 is disposed on the housing 100. The fresh air module 200 includes a fresh air volute 21 and an exhaust volute 23. A fresh air impeller 22 is disposed inside the fresh air volute 21, and an exhaust impeller 24 is disposed inside the exhaust volute 23. The fresh air module 200 can draw fresh outdoor air into the room through the fresh air impeller 22 and then exhaust the stale indoor air to the outside through the exhaust impeller 24, thereby changing the indoor air quality by exchanging the indoor air with fresh air.

[0092] During the process of the fresh air module 200 exchanging air in the room, the airflow formed by the outdoor fresh air being introduced into the room is called fresh air, and the airflow formed by the indoor air being exhausted is called stale air.

[0093] Combination Figure 14 and Figure 15 , Figure 14 This is a schematic diagram of the fresh air flow direction of the fresh air module 200 disclosed in an embodiment of this application. Figure 15 This is a schematic diagram of the stale airflow direction of the fresh air module 200 disclosed in an embodiment of this application. In some embodiments, the fresh air module 200 further includes a heat exchange core 27, which may have intersecting fresh air flow channels (not shown) and stale air flow channels (not shown). The heat exchange core housing 26 further includes a heat exchange cavity 2601, in which the heat exchange core 27 is disposed. The heat exchange core housing 26 is disposed at the air outlet of the fresh air volute 21, and has a fresh air heat exchange inlet 261, a fresh air heat exchange outlet 262, and an exhaust heat exchange inlet 263. The heat exchange inlet 261 is connected to the outlet of the fresh air volute 21; the fresh air heat exchange outlet 262 is used to connect the indoor space; the exhaust heat exchange inlet 263 is connected to the outlet of the exhaust volute 23; a fresh air flow channel and a stale air flow channel are formed inside the heat exchange core 27, the fresh air flow channel is connected to the fresh air heat exchange inlet 261 and the fresh air heat exchange outlet 262 respectively; the stale air flow channel is connected to the exhaust heat exchange inlet 263 and the exhaust heat exchange outlet 264 respectively; fresh air and stale air can exchange heat through the fresh air flow channel and the stale air flow channel. During the fresh air module 200's fresh air exchange process, such as... Figure 14As shown by the arrows, outdoor fresh air, under the action of the fresh air impeller 22, sequentially passes through the air inlet of the fresh air volute 21, the air outlet of the fresh air volute 21, the fresh air heat exchange inlet 261 of the heat exchange chamber 2601, the air inlet of the fresh air flow channel, the air outlet of the fresh air flow channel, and the fresh air heat exchange outlet 262 of the heat exchanger before entering the room. Figure 15 As shown by the arrows, the stale air in the room can be discharged to the outdoor space through the air inlet of the exhaust volute 23, the air outlet of the exhaust volute 23, the stale air inlet, the air inlet of the stale air flow channel, the air outlet of the stale air flow channel, and the stale air outlet of the heat exchange chamber 2601 under the action of the exhaust impeller 24. During the process of fresh air entering and stale air being discharged, the fresh air flow channel and the stale air flow channel intersect each other, or can be perpendicular to each other, so that the fresh air and stale air can fully exchange heat and moisture in the heat exchange core 27. This allows the temperature of the fresh air to be close to the room temperature and the humidity to be close to the indoor air humidity. The indoor temperature and humidity will not change drastically after the fresh air is introduced, and there is no need to start the compressor to heat or cool the fresh air. This can save energy, reduce noise, and improve the user experience.

[0094] Combination Figure 14 , Figure 15 and Figure 16 In some embodiments, the exhaust impeller 24 disposed in the exhaust volute 23 and the fresh air impeller 22 disposed in the fresh air volute 21 are coaxially arranged, so that the fresh air impeller 22 and the exhaust impeller 24 can be driven to rotate by a single drive motor 25. This eliminates the need to set up a separate drive motor 25 for each of the fresh air impeller 22 and the exhaust impeller 24, which can reduce the number of components required for the fresh air module 200. This not only reduces the production cost, but also significantly reduces the volume occupied by the fresh air module 200, which is conducive to the miniaturization design of the fresh air module 200 and makes it easier to integrate the fresh air module 200 into the indoor unit.

[0095] Combination Figure 14 , Figure 15 and Figure 16In some embodiments, the fresh air module 200 further includes a filter housing 30, which is arranged side by side with the fresh air volute 21 along the axial direction of the fresh air volute 21 and located on the surface of the fresh air volute 21 facing away from the exhaust volute 23. The filter housing 30 has a filter chamber 301, a fresh air filter inlet 31, a fresh air filter exhaust outlet 32, and a filter element 33. The fresh air filter inlet 31 connects the outdoor space and the filter chamber 301; the fresh air filter exhaust outlet 32 ​​connects the fresh air volute 21 and the filter chamber 301. The inlet of the fresh air volute 21 is located on the surface of the fresh air volute 21 and is perpendicular to the axis of the fresh air volute 21. The fresh air filter exhaust outlet 32 ​​corresponds to and is adapted to the inlet of the fresh air volute 21; the filter element 33 is located inside the filter chamber 301 and between the fresh air filter inlet 31 and the fresh air filter exhaust outlet 32. The filter element 33 corresponds to and is adapted to the fresh air filter exhaust outlet 32. The filter element 33 is used to filter the outdoor air entering the fresh air volute 21. The air inlet of the fresh air volute 21 is located on the surface of the fresh air volute 21 perpendicular to its axis. The position of the filter element housing 30 matches the air inlet of the fresh air volute 21, ensuring that the filtered air can smoothly enter the fresh air volute 21. By setting the filter element 33, the incoming fresh air from the outside can be effectively filtered, removing dust, particulate matter, pollen and other impurities from the air, improving the air quality of the incoming fresh air, and providing users with a healthier and more comfortable indoor environment. The use of filter element 33 can also reduce the entry of impurities into the fresh air volute 21 and subsequent fresh air system components, reducing the risk of wear and blockage of components such as the fresh air impeller 22 and heat exchange core 27, thereby extending the service life of the equipment and reducing maintenance and replacement costs. Moreover, the filter element 33 can also be perpendicular to the axis of the fresh air volute 21. While keeping the volume of the fresh air module 200 as small as possible, the filtration area of ​​the filter element 33 can be increased, thereby increasing the filtration area and service life of the filter element 33. The filter element 33 can employ a multi-layer filtration structure or high-efficiency filtration materials, such as HEPA filters or activated carbon filters, to improve filtration efficiency and precision, further enhancing the quality of fresh air. Additionally, sealing structures such as sealing strips or gaskets can be installed between the filter element 33 and the filter element housing 30 to ensure that filtered air does not leak from gaps, guaranteeing the filtration effect.

[0096] Fresh air in the fresh air module 200 is introduced from the outside through the fresh air duct 29 into the fresh air filter inlet 31. After passing through the filter element 33, it enters the fresh air volute 21 from the fresh air filter exhaust outlet 32. Stale air in the fresh air module 200 is discharged from the exhaust volute 23, enters the heat exchange chamber 2601, and is discharged from the exhaust heat exchange outlet 264, and then discharged to the outdoor space through the exhaust duct 28.

[0097] Combination Figure 2 and Figure 5 , Figure 5This is a schematic diagram of the structure of the fresh air module without a T-joint disclosed in this application embodiment. The two ends of the exhaust duct 28 are connected to the exhaust heat exchange outlet 264 and the outdoor space, respectively, allowing the stale air from the indoor space to be discharged into the outdoor space. The drain pipe 12 is connected to the exhaust duct 28 via the connecting section 122, allowing the liquid discharged from the drain outlet 11 of the casing 100 to enter the exhaust duct 28 and be discharged into the outdoor space along with the stale air in the exhaust duct 28. This eliminates the need for the drain pipe 12 to pass through the wall and avoids the need to pass through the pre-reserved hole in the wall along with the fresh air duct 29 and the exhaust duct 28. Without changing the diameter of the pre-reserved hole, more space is provided for the fresh air duct 29 and / or the exhaust duct 28, allowing for a larger diameter of the fresh air duct 29, which helps increase the fresh air volume, and / or a larger diameter of the exhaust duct 28, which helps increase the exhaust air volume.

[0098] Furthermore, the drain pipe 12 in this embodiment includes a main body section 121 and a connecting section 122. The inlet of the main body section 121 is connected to the drain outlet 11 of the housing 100. The drain outlet 11 can be located on the base of the housing 100. Liquid on the condenser inside the housing 100 can flow to the base and then enter the main body section 121 of the drain pipe 12 through the drain outlet 11. The main body section 121 can extend horizontally along the length of the housing 100. The connecting section 122 can be an inclined pipe. The second end 1222 of the connecting section 122 is farther away from the main body section 121 than the first end 1221 along the exhaust direction of the exhaust pipe 28. This allows the flow direction of the water in the connecting section 122 to form an acute angle with the flow direction of the turbid air in the exhaust pipe 28. It is worth noting that the acute angle here is... Figure 8 At point α, Figure 8 This is a cross-sectional structural diagram of the fresh air module 200 without the T-joint 13 disclosed in this application embodiment. When the water flow in the connecting section 122 and the airflow in the exhaust duct 28 converge, both flow in the same direction towards the outdoor space, preventing backflow. This allows the water to flow smoothly from the exhaust duct 28 to the outdoor space without entering the heat exchange chamber 2601 in the opposite direction. This avoids liquid contamination of the heat exchange core 27, reducing its lifespan and affecting the heat exchange of the fresh air module 200. Furthermore, the turbid airflow in the exhaust duct 28 can also drive the water flow, further facilitating its smooth discharge from the exhaust duct 28 to the outdoor space. It also reduces collisions and impacts between the water flow and the exhaust duct 28, thereby reducing noise caused by water flow impact. In addition, smooth airflow also reduces airflow noise during exhaust, improving the user experience.

[0099] According to the wall-mounted air conditioner indoor unit of this utility model embodiment, the drain pipe 12 and the exhaust pipe 28 are connected together, allowing the liquid discharged from the drain port 11 of the casing 100 to enter the exhaust pipe 28 and be discharged to the outdoor space together with the stale air in the exhaust pipe 28. This eliminates the need for the drain pipe 12 to pass through the wall, allowing more space for the fresh air duct 29 and / or the exhaust pipe 28. This allows for a larger diameter of the fresh air duct 29, which helps increase the fresh air volume, and / or a larger diameter of the exhaust pipe 28. The larger size helps to increase the exhaust air volume; moreover, the second end 1222 of the connecting section 122 is farther away from the main section 121 than the first end 1221 along the exhaust direction of the exhaust pipe 28. This allows the water flow in the connecting section 122 to flow in the same direction when it merges with the airflow in the exhaust pipe 28, without generating backflow. This allows the water flow to flow smoothly from the exhaust pipe 28 to the outdoor space without entering the heat exchange chamber 2601 in the opposite direction, thus avoiding liquid contamination of the heat exchange core 27 and affecting the heat exchange of the fresh air module 200.

[0100] Combination Figure 8 In some embodiments, the angle between the axis of the connecting section 122 and the axis of the exhaust pipe 28 is greater than or equal to 15° and less than 90°.

[0101] Specifically, Figure 8 The two dashed lines represent the axis of the connecting section 122 and the axis of the exhaust pipe 28, respectively. The acute angle α can be 15°≤α<90°. On the one hand, the angle between the axis of the connecting section 122 and the axis of the exhaust pipe 28 is less than 90°, which allows the airflow and water flow to flow more smoothly along the exhaust pipe 28 to the outdoor space when they converge. On the other hand, the angle between the axis of the connecting section 122 and the axis of the exhaust pipe 28 is greater than or equal to 15°, which can avoid stress concentration at the connection between the drain pipe 12 and the exhaust pipe 28, reduce structural stability, and affect the service life of the exhaust pipe 28 and the drain pipe 12.

[0102] Combination Figure 3 and Figure 4 , Figure 3 This is a rear view of the wall-mounted air conditioner indoor unit, where the three-way connector 13 is disposed between the heat exchange core housing 26, the exhaust pipe 28, and the drain pipe 12, as disclosed in this application embodiment. Figure 4This is a rear view of the wall-mounted air conditioner indoor unit with the T-joint 13 disposed between the exhaust pipe 28 and the drain pipe 12, as disclosed in an embodiment of this application. In some embodiments, the wall-mounted air conditioner indoor unit includes a T-joint 13, which includes a manifold 131 and a water inlet pipe 132. The axis of the manifold 131 is collinear with the axis of the exhaust pipe 28. The manifold 131 has a third end 1311 and a fourth end 1312 that are interconnected. The third end 1311 is connected to the exhaust heat exchange outlet 264, and the fourth end 1312 is connected to the outdoor space through the exhaust pipe 28. The water inlet end of the water inlet pipe 132 is connected to the connecting section 122, and the water outlet end of the water inlet pipe 132 is connected to the manifold 131. The axis of the water inlet pipe 132 is collinear with the axis of the connecting section 122.

[0103] Specifically, a T-joint 13 connects the exhaust pipe 28 and the drain pipe 12. The T-joint 13 simplifies the connection process between the drain pipe 12 and the exhaust pipe 28, reducing installation difficulty and improving efficiency. Installers only need to connect the drain pipe 12 and the exhaust pipe 28 to the corresponding interfaces of the T-joint 13, eliminating the need for complex pipe layout and connection operations. Furthermore, the T-joint 13 connects the intersection of the three pipes, offering better durability compared to direct pipe connections, thus extending the overall service life of the pipeline. The tee connector 13 in this embodiment includes a manifold 131 and a water inlet pipe 132. The axis of the manifold 131 is collinear with the axis of the exhaust pipe 28, and the axis of the water inlet pipe 132 is collinear with the axis of the drain pipe 12. This makes the manifold 131 and the water inlet pipe 132 of the tee connector 13 form an acute angle, which allows for smoother water flow when it merges with the airflow in the manifold 131. The water flow will not flow backward into the heat exchange chamber 2601, preventing liquid contamination of the heat exchange core 27, reducing its lifespan, and affecting the heat exchange of the fresh air module 200. It also reduces collisions and impacts between the water flow and the exhaust pipe 28, thereby reducing noise caused by water flow impact. Furthermore, smooth airflow also reduces airflow noise during exhaust, improving the user experience. In addition, sealing structures, such as sealing rings and gaskets, can be added to the connection points of the tee joint 13 with the exhaust pipe 28 and the drain pipe 12 to enhance the sealing performance of the connection and prevent condensate leakage or backflow of outdoor air. Simultaneously, a detachable sealing structure can be designed for easy installation and maintenance. Specifically, the exhaust pipe 28 can be fitted around the outer periphery of the manifold 131, and the drain pipe 12 can be fitted around the outer periphery of the inlet pipe 132, and then fixed with pipe clamps. The angle between the axis of the inlet pipe 132 and the axis of the manifold 131 can be no less than 15° to facilitate the connection operation between the inlet pipe 132 and the drain pipe 12.

[0104] Combination Figure 7 and Figure 13 , Figure 7This is a schematic diagram of the structure of the fresh air module 200, in which the three-way connector 13 is disposed between the exhaust pipe 28 and the drain pipe 12, as disclosed in the embodiments of this application. Figure 13 This is a schematic diagram of the structure of the tee connector 13, the exhaust pipe 28, and the drain pipe 12, which are disposed between the exhaust pipe 28 and the drain pipe 12, as disclosed in the embodiments of this application. In some embodiments, the tee connector 13 is disposed between the exhaust pipe 28 and the drain pipe 12. The third end 1311 and the fourth end 1312 of the manifold 131 are both connected to the exhaust pipe 28. The third end 1311 is connected to the exhaust heat exchange outlet 264 through the exhaust pipe 28, and the fourth end 1312 is connected to the outdoor space through the exhaust pipe 28. The water inlet end of the water inlet pipe 132 is connected to and communicates with the connecting section 122 of the drain pipe 12.

[0105] Specifically, the tee connector 13 can be installed outside the housing 100, between the housing 100 and the wall. The water inlet pipe 132 of the tee connector 13 is connected to the drain pipe 12, and the manifold 131 of the tee connector 13 is located on the exhaust pipe 28. Both ends of the manifold 131 are connected to the exhaust pipes 28 on both sides. The tee connector 13 is connected and fixed through the exhaust pipes 28 and the drain pipe 12. This arrangement makes it easier for operators to connect the pipes and facilitates the disassembly and assembly of each pipe during after-sales maintenance.

[0106] Combination Figure 6 , Figure 6 This is a schematic diagram of the structure of the fresh air module 200 disclosed in this application, in which the three-way connector 13 is disposed between the heat exchange core housing 26, the exhaust pipe 28, and the drain pipe 12. In some embodiments, the three-way connector 13 is disposed between the heat exchange core housing 26, the exhaust pipe 28, and the drain pipe 12. The third end 1311 of the manifold 131 is connected to the heat exchange core housing 26 and communicates with the exhaust heat exchange outlet 264. The fourth end 1312 of the manifold 131 is connected to and communicates with the exhaust pipe 28. The water inlet end of the water inlet pipe 132 is connected to and communicates with the connecting section 122 of the drain pipe 12.

[0107] Specifically, the tee connector 13 can also be set inside or through the housing 100. The water inlet pipe 132 of the tee connector 13 is connected to the drain pipe 12, and the manifold 131 of the tee connector 13 is connected to the heat exchange core housing 26 and the exhaust pipe 28 respectively. This solution directly sets the tee connector 13 on the heat exchange core housing 26, which can make the installation and fixation of the tee connector 13 more stable and avoid shaking.

[0108] Combination Figure 9 , Figure 10 and Figure 11 , Figure 9This is a schematic diagram of the structure of the tee connector 13 disclosed in this application, which is disposed between the heat exchange core outer shell 26, the exhaust pipe 28, and the drain pipe 12. Figure 10 This is a schematic cross-sectional view of the fresh air module 200, in which the three-way connector 13 is disposed between the heat exchange core housing 26, the exhaust pipe 28, and the drain pipe 12, as disclosed in this application embodiment. Figure 11 The embodiments disclosed in this application Figure 10 An enlarged structural schematic diagram at point A. In some embodiments, the tee connector 13 includes a connecting pipe 133, which has a fifth end 1331 and a sixth end 1332 that are interconnected. The fifth end 1331 is connected to the heat exchange core housing 26 and communicates with the exhaust heat exchange outlet 264. The sixth end 1332 is connected to and communicates with the third end 1311 of the manifold 131, and the connecting pipe 133 and the manifold 131 are integrally formed.

[0109] Specifically, the tee connector 13 can be installed on the heat exchange core housing 26 through the connecting pipe 133, and the manifold 131 is connected to the exhaust heat exchange outlet 264. The axis of the connecting pipe 133 intersects with the axis of the manifold 131, and can be perpendicular to each other. The connecting pipe 133 and the manifold 131 are integrally formed, which can simplify the production process of the tee connector 13, improve production efficiency, and also improve the sealing performance of the tee connector 13, preventing air leakage at the connection between the connecting pipe 133 and the manifold 131.

[0110] Combination Figure 12 , Figure 12 This is a cross-sectional view of the fresh air module 200, which is disposed between the heat exchange core housing 26, the exhaust pipe 28, and the drain pipe 12, according to another aspect of the embodiments disclosed in this application. In some embodiments, the connecting pipe 133 has a protrusion 1333 and a mounting hole 1334. The protrusion 1333 is disposed on the outer periphery of the connecting pipe 133 and is located at the fifth end 1331 of the connecting pipe 133. The mounting hole 1334 is disposed on the protrusion 1333 and penetrates the protrusion 1333 along the axial direction of the connecting pipe 133. The heat exchange core housing 26 has a threaded hole 265 for screwing fasteners (not shown in the figure). The threaded hole 265 corresponds to and is adapted to the mounting hole 1334. The connecting pipe 133 is installed on the heat exchange core housing 26 by fasteners that cooperate with the mounting hole 1334 and the threaded hole 265.

[0111] Specifically, the fasteners can be connecting bolts or screws. After passing through the mounting hole 1334, the fasteners are screwed into the threaded hole 265. The connecting pipe 133 is installed onto the heat exchange core housing 26, with the tee connector 13 positioned on the heat exchange core housing 26. Simultaneously, the opening of the connecting pipe 133 is aligned with the exhaust heat exchange outlet 264, connecting the connecting pipe 133 to the exhaust heat exchange outlet 264. This allows the manifold 131 to connect to the heat exchange core housing 26 and to the exhaust heat exchange outlet 264, enabling the turbid airflow to enter the manifold 131. This not only allows the tee connector 13 to be disassembled for easy maintenance but also provides a stable fixing structure, preventing it from falling off during use. The axis of the connecting pipe 133 can be perpendicular to the axis of the manifold 131. In addition, the protrusion 1333 can be arranged around the outer periphery of the connecting pipe 133, and a sealing sponge can be provided between the protrusion 1333 and the outer wall of the heat exchange core housing 26 to improve the sealing between the connecting pipe 133 and the exhaust heat exchange outlet 264.

[0112] Combination Figure 10 and Figure 11 In some embodiments, the heat exchange core housing 26 has an air supply pipe 266, which is disposed at the exhaust heat exchange outlet 264; the connecting pipe 133 has a connecting groove 1335, which is disposed on the inner wall of the connecting pipe 133, and the connecting groove 1335 extends from the fifth end 1331 to the sixth end 1332, and the air supply pipe 266 is inserted into the connecting groove 1335.

[0113] Specifically, the air outlet can be a relatively short pipe, integrally formed with the heat exchange core housing 26. The connecting groove 1335 is equivalent to widening the fifth end 1331 of the connecting pipe 133 by one ring. The air supply pipe 266 corresponds to and fits the connecting groove 1335, and can extend into the connecting pipe 133 and cooperate with the connecting groove 1335. The air supply pipe 266 can send the turbid airflow discharged from the exhaust heat exchange outlet 264 into the connecting pipe 133, changing the outlet position of the turbid airflow in the heat exchange core housing 26. The outlet position is moved to the connecting pipe 133, rather than at the connection surface between the connecting pipe 133 and the heat exchange core housing 26. This setting can improve the sealing between the connecting pipe 133 and the heat exchange core housing 26, preventing turbid air leakage and re-entry into the room, which would affect the exhaust effect of the fresh air module 200. Furthermore, the insertion and connection of the connecting groove 1335 and the air supply pipe 266 can provide stable support and positioning for the connecting pipe 133, making it less prone to shaking or displacement, thus enhancing the stability of the entire structure, extending the service life of the components, and reducing the risk of failure due to loose connections.

[0114] Combination Figure 10 and Figure 11In some embodiments, the tee connector 13 includes a water-blocking rib 134, which is arranged around the inner wall of the connecting pipe 133. The water-blocking rib 134 is located at the sixth end 1332 of the connecting pipe 133 and is integrally formed with the connecting pipe 133 and the manifold 131. The water-blocking rib 134 is used to prevent the water discharged from the drain pipe 12 from entering the exhaust heat exchange outlet 264.

[0115] Specifically, the water-blocking rib 134 is arranged around the inner wall of the connecting pipe 133, which can block the water flow along the inner wall of the connecting pipe 133, preventing the water from flowing backward into the exhaust heat exchange outlet 264 and affecting the service life of the heat exchange core 27 inside the heat exchange core 27 shell, thus improving the reliability and operational stability of the fresh air module 200. Moreover, the water-blocking rib 134 is integrally formed with the connecting pipe 133 and the manifold 131. During the molding process of the tee connector 13, the water-blocking rib 134 can be directly formed at the intersection of the connecting pipe 133 and the manifold 131 without adding extra production processes, which can ensure the production efficiency of the tee connector 13.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that, include: A housing (100) having a drain outlet (11); A fresh air module (200) is disposed within the housing (100), the fresh air module (200) comprising: Fresh air volute (21); A fresh air impeller (22) is disposed inside the fresh air volute (21), and the fresh air impeller (22) is used to draw in fresh air from the outdoor space; The exhaust volute (23) is arranged side by side with the fresh air volute (21) along the axial direction of the fresh air volute (21); An exhaust impeller (24) is disposed inside the exhaust volute (23), and the shaft of the exhaust impeller (24) and the shaft of the fresh air impeller (22) both extend along the axial direction of the fresh air volute (21). The exhaust impeller (24) is used to exhaust turbid air from the indoor space. A drive motor (25) is connected to the fresh air impeller (22) and the exhaust impeller (24) respectively, so as to drive the fresh air impeller (22) and the exhaust impeller (24) to rotate; A heat exchange core housing (26) is disposed in the fresh air volute (21). The heat exchange core housing (26) has a heat exchange chamber (2601) and an exhaust heat exchange outlet (264). The heat exchange chamber (2601) is connected to the outlet of the fresh air volute (21), the outlet of the exhaust volute (23), and the exhaust heat exchange outlet (264), respectively. A heat exchange core (27) is disposed in the heat exchange chamber (2601) to exchange heat between indoor stale air and outdoor fresh air flowing through the heat exchange chamber (2601); An exhaust duct (28) is provided, one end of which is connected to the exhaust heat exchange outlet (264), and the other end is used to connect to the outdoor space. Drain pipe (12), said drain pipe (12) comprising: The main body section (121) is connected to the drain outlet (11) of the housing (100) by the water inlet end of the main body section (121); The connecting section (122) has a first end (1221) and a second end (1222). The first end (1221) is connected to the outlet of the main body section (121), and the second end (1222) is connected to the exhaust pipe (28). The connection position of the second end (1222) and the exhaust pipe (28) is located in the indoor space. Along the exhaust direction of the exhaust pipe (28), the second end (1222) is farther away from the main body section (121) than the first end (1221).

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The angle between the axis of the connecting section (122) and the axis of the exhaust pipe (28) is greater than or equal to 15° and less than 90°.

3. The wall-mounted air conditioner indoor unit according to claim 1 or 2, characterized in that, The wall-mounted air conditioner indoor unit includes: A tee connector (13), the tee connector (13) comprising: The manifold (131) has its axis collinear with the axis of the exhaust pipe (28). The manifold (131) has a third end (1311) and a fourth end (1312) that are connected to each other. The third end (1311) is connected to the exhaust heat exchange outlet (264), and the fourth end (1312) is connected to the outdoor space through the exhaust pipe (28). The inlet pipe (132) has its inlet end connected to the connecting section (122) and its outlet end connected to the manifold (131). The axis of the inlet pipe (132) is collinear with the axis of the connecting section (122).

4. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that, The three-way connector (13) is located between the exhaust pipe (28) and the drain pipe (12). The third end (1311) and the fourth end (1312) of the manifold (131) are both connected to the exhaust pipe (28). The third end (1311) is connected to the exhaust heat exchange outlet (264) through the exhaust pipe (28), and the fourth end (1312) is connected to the outdoor space through the exhaust pipe (28). The water inlet end of the water inlet pipe (132) is connected to and communicates with the connecting section (122) of the drain pipe (12).

5. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that, The three-way connector (13) is disposed between the heat exchange core shell (26), the exhaust pipe (28) and the drain pipe (12). The third end (1311) of the manifold (131) is connected to the heat exchange core shell (26) and communicates with the exhaust heat exchange outlet (264). The fourth end (1312) of the manifold (131) is connected to and communicates with the exhaust pipe (28). The water inlet end of the water inlet pipe (132) is connected to and communicates with the connecting section (122) of the drain pipe (12).

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The tee connector (13) includes: The connecting pipe (133) has a fifth end (1331) and a sixth end (1332) that are interconnected. The fifth end (1331) is connected to the heat exchange core shell (26) and communicates with the exhaust heat exchange outlet (264). The sixth end (1332) is connected to and communicates with the third end (1311) of the manifold (131). The connecting pipe (133) and the manifold (131) are integrally formed.

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The connecting pipe (133) has: A protrusion (1333) is provided on the outer periphery of the connecting pipe (133) and located at the fifth end (1331) of the connecting pipe (133); Mounting hole (1334) is provided in the protrusion (1333) and passes through the protrusion (1333) along the axial direction of the connecting pipe (133); The heat exchange core housing (26) has: A threaded hole (265) is used for screwing fasteners, the threaded hole (265) corresponding to and fitting the mounting hole (1334); The connecting pipe (133) is installed on the heat exchange core housing (26) by means of the fasteners, which cooperate with the mounting hole (1334) and the threaded hole (265).

8. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The heat exchange core housing (26) has: An air supply duct (266) is provided at the exhaust heat exchange outlet (264); The connecting pipe (133) has: A connecting groove (1335) is provided on the inner wall of the connecting pipe (133). The connecting groove (1335) extends from the fifth end (1331) to the sixth end (1332). The air supply pipe (266) is inserted into the connecting groove (1335).

9. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The tee connector (13) includes: A water-blocking rib (134) is arranged around the inner wall of the connecting pipe (133). The water-blocking rib (134) is located at the sixth end (1332) of the connecting pipe (133) and is integrally formed with the connecting pipe (133) and the manifold (131). The water-blocking rib (134) is used to prevent the water discharged from the drain pipe (12) from entering the exhaust heat exchange outlet (264).

10. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The heat exchange core housing (26) is disposed at the air outlet of the fresh air volute (21), and the heat exchange core housing (26) has: The fresh air heat exchange inlet (261) is connected to the air outlet of the fresh air volute (21); Fresh air heat exchange outlet (262) is used to connect indoor space; The exhaust heat exchange inlet (263) is connected to the outlet of the exhaust volute (23); The heat exchange core (27) contains: The fresh air flow channel is connected to the fresh air heat exchange inlet (261) and the fresh air heat exchange outlet (262) respectively; The turbid air flow channel is connected to the exhaust heat exchange inlet (263) and the exhaust heat exchange outlet (264) respectively; The fresh air and the stale air can exchange heat through the fresh air flow channel and the stale air flow channel.

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